Molding-machine.



E. RONOERAY. MOLDING MACHINE. APPLIOATION nun mnyjaa, 1910.

976,833. Patehted Nov. 22; 1910.

4 snnnws-sn1in 1.

Fly?! my. 2.

THE NoRRls PETERS co. WASHINGTON. 2:- c4

E. RONOERAY. MOLDING MACHINE. 'APPLIUATION FILED JULY 25,1910.

Patented Nov. 22, 1910.

4 SHEETS-SHEET 2.

F ya

M, f u a w .1. X W// \L A MW n nu & 3;

1m: NORRIs PETERS 50., WASHINGTON, n. c.

E. 'RONGERAYQ MOLDING MACHINE. urmourou 1mm JULY 26,1910.

976,833. Patented Nov. 22, 1910.

4 SHEETS-SHEET 3.

. in Ventor. Or

rut NURIIS PETERS c0, WASHINGTON, o. c.

E. RONUERAY.

MOLDING MACHINE. APPLIOATIOK nun JULY 25,1010.

976,835. Q Patented m 22, 1910.

4 BEEETHHEBT 4.

KQMZ/ 5 1n: nomus Ptztns do, WASHINGION, n. c,

UNITED STATES PATENT OFFICE.

EUGENE RONGERAY,

OF PARIS, FRANCE, ASSIGNOR T0 SOCIETE ANONYME DES ETABLISSEMENTS PH.BONVILLIAN & E. RONCERAY, 0F PARIS, FRANCE, A 003- PORATION 0F FRANCE.

MOLDIN G-IVIACHIN E.

Patented Nov. 22, 1910.

Application filed July 25, 1910. Serial No. 573,702.

To all whom it may concern:

Be it known that I, EUGENE RONCERAY, a citizen of France, residing atParis, France, have invented certain new and useful Improvements inMolding-Machines, of which the following is a specification.

The invention relates to molding machines, and has for its primaryobjects; the provision of a machine in which the ramming and patterndrawing may be accomplished more rapidly than has been heretofore done;the provision of a molding machine in which the use of the usual loosesand frame is dispensed with and in which the sand frame employedremains in convenient position and ready for use after each drawingoperation; the provision of a machine in which the ramming plate moveswith the mold in the drawing operation, so that a certain amount ofsuction is exerted by such plate upon the upper face of the sand, whichsuction tends to prevent the central portions of the mold from thesagging which often ocours with the ordinary apparatus where the rammingplate is withdrawn from the upper face of the mold and the mold liftedby the corners of the flask in the usual way; and the provision of amachine in which the operations throughout are substantially automaticand require only a slight amount of attention by the operator. Certainembodiments of the invention are shown in the accompanying drawings,wherein:

Figure l is a vertical section through the molding machine beforemolding; Figure 2 is a vertical section through the machine on a planeat a right angle to that of Figure 1; Figure 3 is a vertical sectionshowing the molding machine after ramming the sand; Figure t is apartial vertical section of the machine during pattern drawing; Figure 5is a plan view of the machine with the flask 37 removed; Figure 5 is ahorizontal section through the flask on the line CD of Figure 2; Figure6 is a horizontal section on the line AB of Figure 3; Figure 7 is also ahorizontal section on the line A-B, but with the plate 20 and partscarried thereby, re-

moved; Figure 8 is similar to Figure 7 but shows one of the elements inanother position; Figure 9 is an elevation partially sectional of amodified design of the molding machine shown in Figures 1-8, at thebegin ning of the ramming operation; Figure 10 is a front view of thesame machine after pattern drawing; Figure 11 is an elevation partlallysectional after pattern drawing; Figure 12 is a horizontal section online EF of Figure 9, and Figure 13 is a detail View of an automatic lockmechanism.

The machine shown in Figures 1 to 8 comprises a frame 15 in the verticalaxis of which is fixed a hydraulic cylinder 16 in which the patterndrawing piston 17 is adapted to reciprocate. On the top of this pistonis bolted the plate 18, on which is bolted an internally bored part 19,in which is located another plate 20, guided to move vertically. Underthis plate 20 are fixed several rods 21 of a given length passingthrough holes drilled in the bottom of the part 19. In the center of thepart 19 is pivoted a disk 23 resting on the part 19 and of course belowthe table 20. This disk can be moved by a lever 24 and returns under theinfluence of a spring 25. When the lever is pulled by the operator, theholes are opposite the rods 21, and the plate 20 can fall down. On theother hand, this plate 20 is stopped in its downward motion by verticalrods 28 bolted on the plate 29 which is fixed on the frame 15 of themachine.

The upper part of the frame 15 constitutes a table 30 on which thepattern plate 31 is fixed, the framework 32 of such plate being providedwith lugs 38 carrying the flask guide pins 39.

The sand frame 33 slides outside the frame 32 and is provided about itsangles with pro-- jections 34: fixed on vertical rods 35 which arethemselves bolted to projections 36 cast in one with the part 19. Theflask 37 is placed on the sand frame 33 and is fitted with twoprojections 38 drilled with holes 38 for registering with the guide pins39 and with the usual match pins 38.

On the frame 15 is fixed a vertical column 40 on which a horizontalbeam, in which the ramming cylinder is bolted, is adapted to swing. Thisarrangement, which is well known, is not shown on the drawing and Figure3 shows only the ramming plate 41 bolted to the lower end of the rammingpiston.

On the plate 20 are fixed the stools and lifting rods, i. 6., thevarious rods to lift stripping plates 56, cores, etc, as in other 19with the frame and also the flask. The upper position is determined by astop nut 28 screwed on the rod 28 fixed under the plate 18 and passingthrough the frame 15 against which the nut 28 engages. The ramming plateis fixed at the convenient height, so that it comes approximately to thelevel of the upper face of flask 37.

or ramming, the cross-beam being put aside, the flask is placed abovethe sand frame and is filled with sand. The ramming plate is then swungin position above the flask and at the same time throws off the excessof sand. Pressure being applied in the cylinder, the ramming plate 41pushes down the flask 37, sand frame 33, part 19, pattern drawing piston17, and the disk 23 moves down with the part 19, but the plate 20, beingsupported by rods 28, remains in position (Figure 3). The sand frame 33moves down until it comes against stops specially provided for thepurpose, so that when down, its upper edge is at the level of the upperedge of the frame of the pattern plate. At this time, the disk 23 hasarrived, at the level of the lower ends of the rods 21, whichhaveremained in position, and then the sprin 25 causes the disk 23 toturn to an angle su cient to bring opposite, rods 21 and correspondingparts of disk 23. The ramming is finished and drawing of the pattern isproceeded with. To eflect this, the

ramming valve is put to exhaust and the ramming plate is lifted at thesame time as the pattern drawing piston, art 19, sand frame 33 and flask37, the disk 23 raising up the plate 20 through the rods 21, and ofcourse at the same time raising the stools, lifting rods, strippingplate, cores, etc., (Figure 4). When the pattern has been drawn, theflask is taken out. At the same time the'sand frame 33 has moved into aconvenient position for the next operation of ramming. The operator hasnot had to attend to the sand frame, and its manipulation and the sandramming and pattern drawing have been effected with great rapidity, theonly operation being the filling of the flask with sand and thereciprocation of the rams. Before proceeding to a fresh operation-,thelever 24 is pulled so as to bring the disk 23 opposite the rods 21, sothat plate 20 falls down on the rods 28 with its equipment of liftingrods, stools, strip-, ping plate, etc., and these parts again take uptheir position for the next ramming operation.

In. the modified design shown in Figures 9 to 13 the principle of themachine is the same as above, but all operations are eflect- 'edautomatically, except the operation of the valve, this modificationbeing made especially in view of very rapid operation. In thisconstruction, the pattern drawing piston 17 is hollow and has twodifferent diameters, the upper part being somewhat larger than the lowerpart, so that an annular part 42 is formed on which the pressure forpattern drawing actsthe lower part of this piston 17 is screwed toreceive a nut 43 used as the stop and which limits the upper position ofmovement. This nut can be regulated according to different cases. Theupper part of this piston 17 bears the plate 18, having a projection 36adapted to receive vertical rods 35 on which the sand frame 33 isbolted, through the projections 34. The inside of the piston 17 is boredto act as a guide for another piston 44 on the top of which the disk 23is bolted. On this disk is bolted through the parts 21, a plate 20 onwhich are fixed somewhat more yieldingly than before the lifting rods,stools, etc., supporting the stripping plate and cores, if any. The diskor plate 23 bears on the frame of the machine through vertical rods 28fixed in this frame. The whole is governed by a lever 45 pivoted on thebracket 46 with which the ramming cylinder 47 is connected. In thiscylinder moves the piston to the bottom of which the ramming plate 41 isattached. The lever 45 is held up by a spring, while it is connected bya connecting rod to the valve 48, so that when the lever is pulled down,the fluid under pressure is admitted to the ramming cylinder 47, andwhen it is pulled up by the springs, the cylinder is allowed to exhaust.As in the construction previously described, the pattern drawingcylinder 16 is always under pressure.

The piston 44 is milled at its upper part to receive a member 49 (Figure13) mounted on the pivot 50. This member has two arms 51 and 52, and tothe arm 51 is fixed a spring 53, the action of which is to tend to swingthe member out of its position, while the other arm 52, which issubstantially horizontal, when in its ascending motion, is arranged soas to come in contact with a stop 54 carried by the frame 30, the heightof which can be regulated at will.

For ramming, the flask is put above the sand frame and filled with sand,the lever 45 is grasped with both hands and pulled in such a way thatthe beam 46 is brought above the machine. The lever 45 is then lowered,and the pressure being admitted to the cylinder 47, the ramming platesinks with flask 37 and sand frame 33, eflecting by this motion theramming of the sand. By means of the rods 35, lowering motion istransmitted to the plate 18 and piston 17, but the disk 23, piston 44and plate 20 which are supported by the rods 28, remain imposition. At agiven time, at nearly the end of the ramming motion, the plate 18'descends a little beneath the member 49 and the latter, under theinfluence of the spring 53, swings and gets out of its place within thepiston. The attendant then allows the lever 45 to rise and the cylinder47 is consequently put to exhaust. The ramming plate rises and also thepiston 17, plate 18, member 49, piston 44, disk 23, by reason of theengagement of the lower end of the member 49 with the face of the plate18, plate 20, together with the lifting rods, stools, stripping plate,cores, through rods 35, plate 18 and also sand frame 34 and flask 37.Just before the upward motion is finished, the arm 52 comes in contactwith the stop 54 and the member 49 swings back, while the piston 44,being no longer supported by the member 49, falls down with the piston17 and all its equipment stripping plate, lifting rods, stools, etc.,which parts thus move automatically into a position convenient for a newramming position.

Through the handling of lever 45 only, the operator secures the completeoperation of the machine without the necessity of other manipulation,and consequently with a considerable saving of time; the ramming andpattern drawing are effected with very great rapidity, and the output ofthe machine is rendered a maximum. It will be obvious that in themachine described with reference to Figs. 1 to 8, the operation of thelever 24- could be automatically obtained also, so that the operation ofthe machine would be effected solely by the operation of the valve, ifso desired.

The machine described can be used with hydraulic power, compressed air,etc., and in the case of compressed air there is no necessity to use oilbrakes as is the practice in many of the machines now on the market.

Having thus described my invention and illustrated its use, what I claimas new and desire to secure by Letters Patent is the following 1. Incombination in a sand molding machine, a pattern member, a sand framemounted thereabove for vertical telescopic movement thereover, a flaskcarried upon the sand frame and adapted to move vertically therewith, apresser means above the flask for moving the flask and sand frame andthe sand carried thereby downwardly, a stripping plate upon the patternmember, and means for raising the flask and stripping platesimultaneously.

2. In combination in a sand molding machine, a pattern member, a sandframe in telescopic relation with the attern member and yieldingly heldwith 1ts upper edge above the pattern member, a flask carried upon thesand frame, a presser means above the flask, a stripping plate upon thepattern member, and means whereby the stripping plate and flask aremoved upwardly simultaneously after the pressing operation.

3. In combination in a sand molding maingly held with its upper edgeabove the pattern member, a stripping plate upon the pattern member, aflask carried upon the sand frame, a presser means above the flask, andmeans whereby the stripping plate is made to follow the mold when thepresser means, flask and sand frame move upward after the pressingoperation.

4. In combination in a sand molding machine, a pattern member, a sandframe lying with its upper edge above the pattern member, yielding meansfor normally moving the sand frame to such position and holding itthere, a flask carried upon the sand frame, a presser means above theflask, a strip pingplate upon the pattern plate, and means whereby thesaid yielding means engages the stripping plate to move it upwardly withthe sand frame and flask as the presser means moves upward after thepressing operation.

5. In combination in a sand molding machine, a pattern member, a flaskspaced away from the pattern member, a sand frame interposed between theedge of the flask and the edge of the pattern member, presser meanswhereby the flask and member are forced to approach each other,compressing the sand in the sand frame and flask and causing the sandframe to telescope over the pattern member, a stripping plate above thepattern member, and means for moving the flask and stripping platesimultaneously away from the pattern member.

6. In combination in a sand molding machine, a pattern member, a flaskspaced away from the pattern member, a sand frame interposed between theedge of the flask and the edge of the pattern member, a stripping platenormally resting upon the pattern member, presser means whereby theflask and member are forced to approach each. other, compressing thesand in the sand frame and flask and causing the sand frame to telescopeover the pattern member, and yielding means for automatically bringingthe pattern member and flask to their original positions and thestripping plate to a position above its original position after thepressing operation.

7. In combination in a sand molding machine, a frame, a pattern platecarried thereby, yielding power means beneath the pattern plate, a flaskcarried thereby and normally held above the pattern plate, a sand frameinterposed between the lower edge of the flask and the pattern plate andin telescopic relation with such pattern plate, presser means above theflask for carrying the flask and sand frame downwardly and compressingthe sand therein, a stripping plate above the pattern plate, and meanswhereby the stripping plate is automatically engaged with the yieldingpower means when the chine, a pattern member, a sand frame yield- 1flask reaches its lower position so that on the upward movement of theflask, the stripping plate is moved therewith.

8. In combination in a sand molding machine, a. frame, a pattern platecarried. thereby, yielding power means beneath the pattern plate, aflask carried thereby and normally held above the pattern plate, a sandframe interposed between the lower edge of the flask and the patternplate and in telescopic relation with such pattern plate, presser meansabove the flask for carrying the flask and sand frame downwardly andcompressing the sand therein, a stripping erases plate above the patternplate, and inter-engaging means between the yielding power means and thestrippin plate whereby the stripping plate is move upwardly with theflask as the said presser means moves upward.

In testimony whereof I have hereunto signed my name in the presence ofthe two subscribed witnesses.

EUGENE RONCERAY.

Witnesses:

H. C. Coxn, JULIEN EAVERNE.

